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Frequency Resolved Photoluminescence (PL), Delayed Fluorescence and Triplet-Triplet Annihilation In 7Φ-Conjugated Polymers

Published online by Cambridge University Press:  10 February 2011

J. Partee ,
E. L. Frankevich ,
B. Uhlhom ,
J. Shinar ,
Y. Ding  and
T. J. Barton
J. Partee
Affiliation:
Ames Laboratory – USDOE, Iowa State University, Ames, IA 50011 Physics and Astronomy Department, Iowa State University, Ames, IA 50011
E. L. Frankevich
Affiliation:
Ames Laboratory – USDOE, Iowa State University, Ames, IA 50011 International Institute of Theoretical and Applied Physics, Iowa State University, Ames, IA 50011 Institute of Energy Problems of Chemical Physics, Moscow 334, Russia
B. Uhlhom
Affiliation:
Ames Laboratory – USDOE, Iowa State University, Ames, IA 50011 Physics and Astronomy Department, Iowa State University, Ames, IA 50011
J. Shinar
Affiliation:
Ames Laboratory – USDOE, Iowa State University, Ames, IA 50011 Physics and Astronomy Department, Iowa State University, Ames, IA 50011 International Institute of Theoretical and Applied Physics, Iowa State University, Ames, IA 50011
Y. Ding
Affiliation:
Ames Laboratory- USDOE and Chemistry Department, Iowa State University, Ames, IA 50011
T. J. Barton
Affiliation:
Ames Laboratory- USDOE and Chemistry Department, Iowa State University, Ames, IA 50011
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Abstract

The delayed fluorescence of poly(p-phenylene vinylene) (PPV) and poly(p-phenylene ethynylene) (PPE) derivative solids and frozen solutions at 20 K is described. It provides strong evidence for triplet-triplet annihilation to singlets excitons accounting for up to ∼3% of the total emission in PPV films and ∼1.5% in PPE powder. It also yields triplet lifetimes of 70 and 110 μs in PPV films and frozen solutions, and ∼200 and ∼500 μs in PPE powder and frozen solutions, respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 561: Symposium F – Organic Nonlinear Optical Materials and Devices , 1999 , 215
Copyright
Copyright © Materials Research Society 1999

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References

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